<template>
    <div>
        <!--面包屑导航区-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!--卡片视图区域-->
        <el-card>
            <!--搜索与添加区域 -->
        <el-row :gutter="20">
            <el-col :span="7">
            <el-input placeholder="请输入内容" v-model="queryInfo.query" 
                clearable @clear="getUserList">
                 <el-button slot="append" icon="el-icon-search"
                 @click="getUserList"></el-button>
            </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addUserVisible = true">添加用户</el-button>
            </el-col>
        </el-row>
        
        <!-- 用户列表区域 -->
        <el-table :data="userlist" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态">
                <template slot-scope="scope">
                <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
                </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作">
                <template slot-scope="scope">
                    <!--编辑角色按钮-->
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                    <!--删除角色按钮-->
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeByUserId(scope.row.id)"></el-button>
                    <!--分配角色按钮-->
                    <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                    <el-button type="warning" icon="el-icon-setting" size="mini" 
                    @click="setRole(scope.row)"></el-button>
                    </el-tooltip>
                </template>    
             </el-table-column>
        </el-table>
        <!--分页区域-->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>        
        </el-card>
        <!--这是添加用户的对话框-->
        <el-dialog title="添加用户" :visible.sync="addUserVisible" width="50%"
        @close="addDialogClosed" >
        <!--内容主体区域-->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" class="demo-ruleForm">
        <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
        </el-form-item>
         <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
        </el-form-item>
         <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
        </el-form-item>
         <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
        </el-form>
        <!--底部区域-->
        <span slot="footer" class="dialog-footer">
        <el-button @click="addUserVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
        </el-dialog>
        <!--这是修改用户的对话框-->
         <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email" ></el-input>
            </el-form-item>
            <el-form-item label="手机号" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
            </el-dialog>
            <!--分配角色的对话框-->
            <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户:{{userInfo.username}}</p>
                <p>当前的角色:{{userInfo.role_name}}</p>
                <p>分配新角色: 
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option v-for="item in rolesList" :key="item.id"
                        :label="item.roleName" :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
            </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        //验证邮箱的校验规则
        var checkEmail = (rule, value, callback) => {
            //验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/   
            if (!regEmail.test(value)){
                //合法的邮箱
                return callback(new Error('请输入合法的邮箱'));
            }
            else {
                return callback()
            }
        }
        //验证手机号的校验规则
        var checkMobile = (rule, value, callback) => {
            //验证手机号的正则表达式
            const regMobile = /^(0|86|17651)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if (!regMobile.test(value)) {
                return callback(new Error('请输入合法的手机号'));
            }
            else {
                return callback()
            }
        }

        return {
            //获取用户列表的参数对象
            queryInfo: {
                query: '',
                //当前的页数
                pagenum: 1,
                //当前每页显示多少条数据
                pagesize: 2
            },
            userlist: [],
            total: 0,
            //控制用户对话框的显示与隐藏
            addUserVisible: false,
            //添加用户的表单数据
            addForm: {
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            addFormRules: {
                username: [
                    { required: true, message:'请输入用户名', trigger: 'blur' },
                    { min:3, max:10, message:'请输入3-10位字符', trigger: 'blur' }
                ],
                password: [
                    { required: true, message:'请输入密码', trigger: 'blur' },
                    { min:6, max:15, message:'请输入6-15位密码', trigger: 'blur' }
                ],
                email: [
                    { required: true, message:'请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger:'blur' }
                ],
                mobile: [
                    { required: true, message:'请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger:'blur' }
                ]
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            //查询到的用户信息对象
            editForm: {},
            editFormRules: {
               email: [
                    { required: true, message:'请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger:'blur' }
                ],
                mobile: [
                    { required: true, message:'请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger:'blur' }
                ]
            },
            // 控制角色对话框的角色与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: {},
            // 所有角色的数据列表
            rolesList: [],
            // 已选中的角色id值
            selectedRoleId: ''
        }
    },

    created() {
        this.getUserList();
    },
    methods: {
        async getUserList() {
        const {data: res} = await this.$axios.get('users',{params: this.queryInfo})
            console.log(res)
               if(res.meta.status !== 200){
                    return this.$message.error('获取用户列表失败') 
               }
               this.userlist = res.data.users
               this.total = res.data.total      
        },
        //监听pagesize改变的事件
        handleSizeChange(newSize) {
            // console.log(newSize)
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        //监听页码值改变的事件
        handleCurrentChange(newPage) {
            // console.log(newPage)
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        //监听 switch开关的状态
        async userStateChange(userinfo) {
            console.log(userinfo)
            const {data: res} = await this.$axios.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败！')
            }
            this.$message.success('更新用户状态成功！')
            },
            //监听添加用户对话框的关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields();
        },
        //点击按钮添加新用户
        addUser() {
        this.$refs.addFormRef.validate(async valid => {
            if (valid) 
            {
                // 可以发起添加用户的网络请求
            const { data: res } = await this.$axios.post('users', this.addForm)
            console.log(res)
            if (res.meta.status !== 201) {
            this.$message.error('添加用户失败！')
            }

            this.$message.success('添加用户成功！')
                 // 隐藏添加用户的对话框
           this.addUserVisible = false
            }      
            else return false;
            // 重新获取用户列表数据
            this.getUserList()
        })
        },
        async showEditDialog(id) {
            // console.log(id)
            const {data: res} = await this.$axios.get('users/' + id)
            if(res.meta.status !==200){
                return this.$message.error('查询用户信息失败')
            }
            this.editForm = res.data
            //展示编辑用户的对话框
            this.editDialogVisible = true
            
        },
        //监听修改对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields();
        },
        //修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                // console.log(valid)
                if(!valid) return
                // 发起修改用户信息的数据请求
                const { data:res } = await this.$axios.put('users/' + this.editForm.id,{
                    email: this.editForm.email, mobile: this.editForm.mobile
                })
                if (res.meta.status !== 200) {
                    return this.$message.error('更新用户信息失败')
                }
                //提示修改成功
                this.$message.success('更新用户信息成功')
                //关闭对话框
                this.editDialogVisible = false
                //重新获取用户列表
                this.getUserList();
            })
        },
        //根据id删除对应的用户信息
        async removeByUserId(id) {
            // console.log(id)
            // 询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作会永久删除该用户, 是否继续?', '温馨提示', 
            {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }
            ).catch(err => err)
            //如果用户确认删除，则返回值为字符串 confirm
            //如果用户取消了删除，则返回值为字符串 cancel
            // console.log(confirmResult)
            if (confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }
            const { data:res } = await this.$axios.delete('users/' + id)
            if (res.meta.status !== 200) {
                return this.$message.error('删除用户失败')
            }
            this.$message.success('删除用户成功')
            this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo) {
            this.userInfo = userInfo

            //在展示对话框之前需要获取所有的角色列表
            const {data:res} = await this.$axios.get('roles')
                if (res.meta.status !== 200) {
                    return this.$message.error('获取角色列表失败')
                }
                this.rolesList = res.data
            this.setRoleDialogVisible = true
        },
        // 点击按钮,分配角色
        async saveRoleInfo() {
            if(!this.selectedRoleId) {
                return this.$message.error('请选择要分配的角色')
            }
            const {data:res} = await this.$axios.put(`users/${this.userInfo.id}/role`,
            {rid: this.selectedRoleId})

            if (res.meta.status !== 200) {
                return this.$message.error('更新角色失败')
            }
            this.$message.success('更新角色成功')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        setRoleDialogClosed() {
            this.selectedRoleId = ''
            this.userInfo = {}
        }
    }
}
</script>

<style lang="less" scoped>

</style>